double flange resilient seated butterfly valve
double flange resilient seated butterfly valve Product introduction
double flange resilient seated butterfly valve adopts double eccentric structure, so the sealing surfaces can be separated during opening without any damage. Its new structure,excellent performance and bi-directional function. Its widely used to throttle or adjust medium flow volume in industrial pipeline in the fields of water supply and drainage, petroleum, power and municipal construction.
double flange resilient seated butterfly valve valve standard
Face to face according to ISO5752 series 14(DIN3202-F4/EN558-14)
Flange drilled according to ISO7005-2(EN1092-2, DIN2501)
Coating: fusion bonded epoxy resin thickness≥250um
Suitable medium: water and low-corrosive liquid etc.
Suitable temperature: -10~120°C.
double flange resilient seated butterfly valve Technical parameters
| Description | Standard |
| Design and manufacture | EN593 |
| Face to face | ISO5752 series14, EN558-1 series 14, DIN3202 F4 |
| Flange and drilling | ISO7005-2, EN1092, |
| Pressure test | EN12266 |
| Top flange of bare shaft valve | ISO5211 |
| Top flange on worm gearbox for e-actuator | ISO5210 |
double flange resilient seated butterfly valve Main connection dimensions
| Name | Material |
| Body | ductile cast iron, WCB, stainless steel |
| Disc | ductile cast iron, WCB, stainless steel, Al-bronze |
| Stem | SS420, SS431 |
| Disc seat ring | EPDM,NBR,VITON |
| Body seat ring | SS304 |
| Retainer | SS304, SS316 |
| Shaft bearing | Al-bronze, self-lubricating bearing |
| Bolt & nuts | 8.8 grade galvanized, SS304 |
| Coating | epoxy coating, thickness: min. 250 microns, color code: RAl5015, 5017, 5010, and etc. |
